MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for optimal connectivity. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for various applications. Available in different mount types including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with options for plating, such as cadmium and nickel, ensuring durability and reliability. Utilizing M39029 rear release crimp contacts, they provide secure connections. RoHS compliant finishes are available for environmentally conscious applications. With a service rating of I and a service class detail of T, these connectors are ideal for demanding environments requiring high performance and reliability.